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Finding the Fourth Proportional to 18,892.50, 28,338.84 and 5,041.50

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Solution

The fourth proportional to 18,892.50, 28,338.84 and 5,041.50 is: 7,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.50 : 28,338.84 = 5,041.50 : x
  2. Step 2: Convert to fraction form
    18,892.50/28,338.84 = 5,041.50/x
  3. Step 3: Cross multiply
    18,892.50x = 28,338.84 × 5,041.50
  4. Step 4: Simplify right side
    18,892.50x = 142,870,261.86
  5. Step 5: Solve for x
    x = 142,870,261.86/18,892.50
  6. Step 6: Final answer
    x = 7,562.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.